Home / 230,542.20-318,141.90-128,570.76

Finding the Fourth Proportional to 230,542.20, 318,141.90 and 128,570.76

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Solution

The fourth proportional to 230,542.20, 318,141.90 and 128,570.76 is: 177,424.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    230,542.20 : 318,141.90 = 128,570.76 : x
  2. Step 2: Convert to fraction form
    230,542.20/318,141.90 = 128,570.76/x
  3. Step 3: Cross multiply
    230,542.20x = 318,141.90 × 128,570.76
  4. Step 4: Simplify right side
    230,542.20x = 40,903,745,870.84
  5. Step 5: Solve for x
    x = 40,903,745,870.84/230,542.20
  6. Step 6: Final answer
    x = 177,424.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.